Mastering Biology- Microbiology Exam
Questions and Answers
Microorganisms are involved in each of the following processes EXCEPT - Answer -
Smog production
Common commercial benefits of microorganisms include synthesis of - Answer -
riboflavin, acetone and insulin.
A prokaryotic cell may possess each of the following cellular components EXCEPT -
Answer -a nucleus
Which of the following is NOT associated with viruses? - Answer -organelles
Protozoan motility structures include - Answer -cilia, flagella, and pseudopods.
Who is credited with first observing microorganisms? - Answer -Anton Van
Leeuwenhoek
Biogenesis refers to the - Answer -development of life forms from preexisting life forms
In which of the following situations would Koch's postulates be utilized? - Answer -
determination of the cause of a new emerging disease by scientists studying disease
transmission
Molecular biology includes the study of - Answer -how genetic information directs
protein synthesis.
Which of the following statements about biofilms is FALSE? - Answer -Compared to
free-living bacteria, biofilms are more sensitive to antibiotics.
Which of the following statements is INCORRECT regarding prokaryotic cells? - Answer
-They lack a plasma membrane.
The cell walls of bacteria are responsible for the shape of the bacteria and the
difference in the Gram stain reaction. - Answer -True
Fimbriae and pili differ in that - Answer -pili are used for transfer of DNA and motility.
How do spirochetes and spirilla differ? - Answer -Spirilla have external flagella but
spirochetes have axial filaments.
Questions and Answers
Microorganisms are involved in each of the following processes EXCEPT - Answer -
Smog production
Common commercial benefits of microorganisms include synthesis of - Answer -
riboflavin, acetone and insulin.
A prokaryotic cell may possess each of the following cellular components EXCEPT -
Answer -a nucleus
Which of the following is NOT associated with viruses? - Answer -organelles
Protozoan motility structures include - Answer -cilia, flagella, and pseudopods.
Who is credited with first observing microorganisms? - Answer -Anton Van
Leeuwenhoek
Biogenesis refers to the - Answer -development of life forms from preexisting life forms
In which of the following situations would Koch's postulates be utilized? - Answer -
determination of the cause of a new emerging disease by scientists studying disease
transmission
Molecular biology includes the study of - Answer -how genetic information directs
protein synthesis.
Which of the following statements about biofilms is FALSE? - Answer -Compared to
free-living bacteria, biofilms are more sensitive to antibiotics.
Which of the following statements is INCORRECT regarding prokaryotic cells? - Answer
-They lack a plasma membrane.
The cell walls of bacteria are responsible for the shape of the bacteria and the
difference in the Gram stain reaction. - Answer -True
Fimbriae and pili differ in that - Answer -pili are used for transfer of DNA and motility.
How do spirochetes and spirilla differ? - Answer -Spirilla have external flagella but
spirochetes have axial filaments.
